Spaceloid

Spaceloid, a combination of the terminology space and Vocaloid, pertains to fanmade Vocaloids representing outer space, primarily planets with rings.

Depiction
Space Vocaloids are typically depicted with various colored rings placed in varying spots upon their person such as their hair, outfits, and arms.

History
Space Vocaloids were first introduced on May 23, 2012 alongside the first official Spaceloid, Echo, released on the same day.

Spaceloid on Fanloid Wiki

 * Echo, is a fanmade based on the planet Saturn.
 * Pitch, is a fanmade and the second Spaceloid based on the planet Saturn.
 * Tempo

Trivia

 * Spaceloids all have the same series number known as VEM, or "Voice Echo Music" with their associated number.